I've kept everything deliberately sparse. Coin addresses can't be edited once created (by design) but you can register a new username anytime with new addresses. This is to prevent unauthorized people modifying addresses.

Large hashrate miners can choose to set their own difficulty to mine at. To do this set your password to be "d=8" to mine at difficulty 8. Change '8' to any number less than the current PPCoin difficulty. Your payment per share will be that 'd' value times the PPS value listed on the site.